This is how the door will to be the appropriate Vaastu door. In case the correction is needed please look at the doors and entrances
Also check out the PyraVaastu book which has great detail on the science and theory of Vaastu door placement.
Process: See that each side is divided in to 9 equal parts.
Also you can use a door locator tool,Based on where the door or main entrance shows up please apply the protect inside to make the energy balance.
Once the door is positive, Next move to Bathroom, bedroom, kitchen etc...
Also look for location of Main door